Dispensing pump



Oct. 27, 1931. c. SCHOCK 1,829,240

DISPENSING PUMP Filed March 16, 1928 3 Sheets-Shee 1 Oct. 27, 1931. c.SCHOCK 1,829,240

DISPENS ING PUMP Filed March 16, 1928 3 SheetsSheet 2 Me zfir: aarem$060017 Oct. 27, 1931.

C SCHOCK DISPENSING PUMP 1928 3 Sheets-Shee 3 Men/Q7: CZarenceSciaock,

Filed March 16 m |lll llilllll Patented oct. 27, 1931 1,329,249.

um'rno STATES PATENT orrice CLARENCE Sermon, on MOUNT JOY, PENNSYLVANIADISPENSING PUMP 7 Application filed March 16, 1928. Serial No. 262,311.

This invention relates to dispensing lift the lower end of the pumpcylinder and pumps and more particularly to non-measpiston. uringgasoline pumps for use in private ga- Figure 6 is an elevational view ofa modirages, and it comprises in combination with a lied form of pump,wherein the storage tank storage tank a pump cylinder and valve pisislocated above the surface of the ground. ton 'reciprocabletherein, adischarge outlet F1gure 7 1s a fragmentary vertical sectional at a lowpointin the pump cylinder, a loose view of the discharge conduit andpump cylfitting stufiing' box in said cylinder at a point lnder of themodified form of pump. above the upper limit of the piston and above lgr 8 is an enlarged fragmentary secthe discharge outlet of the pump,an'upstandlon of the upper end of the upstanding pipe ing pipe forming acontinuation of the pump Shown 1n Figure 6. cylinder, a tubular handgrip concentrically Flg re 9 is a sectlonal view of the lower m unt d onth t di i d tend "of the pump cylinder, showing a slightly tached at itsupper end with the upper end fi f l'm Of my invention. 21 f h pump d dmeans below the di Referring more particularly to the drawcharge outletof the pump permitting excess g f gasoline to drain hack into thestorage tank; The pump 10 comprising the mv nti i all as hereinaftermore specifically described e g p rlly for prlvate garage use and asdaimed with the intent that each car shall have its 115 i an bj t. f myi nti t vid own private pump for pumping gasoline into a lift and forcepump havinga discharge outtank of the automobile? thus Providing l t t agi t l w r than the md t b independent complete service for each car.filled d ha ing m a vid 1 f th The pump is adapted to be placed in thesmall h N drainage of excess liquid from the discharge 1 11 between hdoors of a double g Outlet d pump h de b t h st0r where such space 1snot more than tlree or age t -k, four inches in width, or inside thegarage in It i f th bj t f my i ti t l'OCELlltlQShVhGIe the fireregulation so permits. provide a dispensing pump having a dis- Referrmgto Flgules 2 to an undefcharsge outlet at a low point therein, means g uW 12 13 Provided Withfl fin P p 13 "or preventing overflow of the liquiddis- Whlch prol'ects iabwe the leYel OI the gm parsed and meanspermitting return of exi P qy ft l concentrlcauy (fess liquid to thetank. wlthin a cas ng 15 Wl11Cll 1s screw threaded or Other and further.will be apparent otherwise athx ed in the Wall of tank 12. As from thefollowing description and drawings h 111 Fl'gure 3 of h drawmgs, casmg Iin which: 10 1s screw threaded at 1ts upper end and 35 Figure l is aview showing a typical .ing d l correspondmgly threaded .stauatibn ofcomprising my inven sleeve l6 which, in turn, has a tubular sleeve tion,used with an underground storage tank. p fn therefrom A T 18.13 p"Figure 2 is an filevatmnd View, partly in elected to the sleeve 17 andhas thereln a dlsso vert i'cal section, ofthe pump and storage 3}? 8 1Stufiing box 20 tank j I I p I eggs t (if l in al gnment wlth the sleeve17, Figure 3 isan enlarged fragmentary secb fi i gi fi i g 5 3 t'ion ofthe um c lin'der and dischar e condint of the type of pum 'shonm Figure2. il islegtveb 1 .cOnnec-ts s-tufimg F I 1. :L I I. t 1 f on .4 \vi 1 au 11 a1 upstanding plpe 23 am 5 S {3 6 m y 91 Vlew which extendsupwardly a distance Well the upp lf 6 i the p p w g habove "the stuffingbox 20. A nut 24 in the ner of connecting the concentric hand 'grlpupper end of t'he pump rod affixes a cap 25 on 1 1 51 pump rod. 7 the"rod in position to cover the upper open Fi ure 51s an enlargedsectional view of end. of the upstanding pipe. An annular 106 s s'mally'closed bya valve 39 of leather, or other suitable material,heldin place by a metal 31 providing communication between thein;

terior of the pump cylinderand the interior of the casing whichsurrounds such cylin j der, for a purpose to be hereinafter described.

flange 26 is formed on this cap, or the cap may be provided withdepending ears, such flange or ears serving as a. means for fasteningthe cap to a tubular hand piece 27 concentric with the upstanding pipe,as by means of rivets 28, also carrying a two-part clip'29 forsupportingthe dispensing hose 30 when it is not in use. i

The ,pump cylinder '14, at a point i above the upper limit of the pumpstroke and below the discharge outlet, is formed with a hole To preventunauthorized use ofthe pump an anchor 32 projects from the T and carriesa chain 33 to' which is afiixeda slottedplate 34 adapted to receive ahasp 35in the slot therein. Apin orpadlock may then be inserted in theclosed loop of the hasp to prevent reciprocation of the hand sequentactuation of the pump.

tank by reason of the .above ground.

ln-h gure-ii, Ihave shown in detail the construction of the piston andlower endof the pump cylinder, comprlslnga plston head 136looselyreceived within the pump cylinder and retained" upon the reducedend oi":the piston rod by a: cotter pin, or other fastening means 37; An opening38 inithe piston is nor- .washer' l0 whichengages the shouldered end .ofthe pumpzrod. x 1 LA cap-'41 closesthe end of the pump cylinder,.su'chcap having formed therein a hole 42 covered by a-flap valve 43 which is.rein-.

forced, by a flat metalmember 4:43 riveted :thereto. Theflap valveisretained on cap 41 by 'a'bolt or rivet 45 in position to cover theopening 42. i Figures 6 to form of pump adapted for use with an ex posedstoragetank, wherein the upstanding pipe is made shorter to compensatefor the;

increased over-all length of the pump and location of the tank In thismodified form of my invention a threaded ring surrounds an opening inthe I tank 51 andis welded,-brazed or otherwise.

ailixed to thetank. AT 52 is threaded. at its vlowerlend into 'thejring50;and carries within .it'a pump cylinder 53 which extends'dowmwardly'into proximity to the bottom ofthe storagetank. The T,furthenhas' an outlet 54 to whicha flexible hose 55 is attached, and

the pump cylinder has ,a'hole" 56 similar to ihat-providsdiin the yp ofp phereto'fore described for pennittingf run-back of excess gasolmeafter a' dispensing operation.

gland nut 57 is screwthreaded into the v upper end of'the T andisinternally threaded forjthe receptionota vertical upstanding pipe:58.r1111 thelower endof the stand pipe grip and con- 9 inclusive, show amodified and above the discharge out-let 541 have pro vided a loosestu'flingbox 59 which will permitthe pump rod 60 to fall freely bygravity and without binding, but which will prevent a substantialquantity of gasolineffromentering the upstanding pipe instead of beingdispensed. through'the flexible, hose. .At its upper open endtheupstandingpipe has a similar loose stuffing box 61 to prevent accidentaloverflow in case liquid should squirt in the upstandingpipeto thismaximum level during a. filling operation.

'is'shown'most clearly in Figure 8, the vupper'end of pump rod 60isscrew threaded and carries a support 62 for the flexible hose when it isnotin'use, and ,likewisea cap 63 any suitable and well-known mannerconcentric with the upsta-nding'pipe. I

*Acoil spring65 ispreferably mounted between the gland nut 57 and thelower edge ofhandgrip Mpasisshown in Figures 6 and 7,;0- act as a shockabsorber when the Qliand grip is reciprocated. Locking means to preventunauthorized actuation of the to which a tubularhand grip is afiixedin Vpump is provided similar to thathereinbefore describedQ s. n

In'Figure 9 I have shown a slightly modified, form of invention wherein-a-- coiled spring 69-surrounds the lower; end o'fthe pistonrod 60 andis adapted to be compressed between-the piston and 'stuifing' box 59 or@gland nut 57 as the piston approaches the upperllimit-of its stroke toabsorb shocks and eliminate impact. p 1 V "In operation, reciprocationof'the hand grip actuates' thepump piston to lift gasoline orother'liquids and to force the same through the flexible dispensinghosefand int'oan'automobile: tank or other receptacle to be filled:

In this respect the pump combines the teaturesof both liftand forcepump-s, since the :gasoline or otherliquid is initially lifted byreciprocation of the piston, and is subsequently forced to the'point, ofdispensing by compressing it between thepiston and stuffing box abovethe pump outlet. .Due to the a very little of theliqui'd to pass throughand beyond it'and such liquid as does pas-s flows back whenpumping;isfdiscontinued and, by

passing through the hole in the pump cyl inder below the dischargeoutlet, finds its Way. backto the storage tank. Likewise, any gasolineor other liquid left'in the flexible hose after a dispensing operation,flow-shack overflow and the same means to utilize as a lubricant andpacking, such portion of the pumped liquid as will leak through theloose stuihng box during a pumping operation, and by providing means forautomatically draining back such leakage to storage tank and the samemeans for draining back excess liquid remaining in discharge apparatusafter a pumping operation.

Having described my invention, what I claim is:

1. A lift dispensing pump comprising a cylinder, a pump rod and pistonthereon reciprocable in said cylinder, a storage tank into which saidcylinder extends, a discharge outlet communicating with the pumpcylinder, a conduit leading from said discharge outlet to a point ofdispensing at a higher level, an upstanding pipe above said dischargeoutlet forming a continuation of said pump cylinder extending asubstantial distance above the upper limit of the pump stroke, astuffing box in said cylinder above the upward limit of the pistonstroke and above the discharge outlet for preventing undue leakage ofliquid there-beyond into the upstanding pipe, a vent formed in the wallof said cylinder in communication with the storage tank at a level belowthe pump discharge outlet, whereby liquid remaining undispensed after apumping operation as well as that which has leaked beyond the stuffingbox will drain back to the storage tank, and a tubular hand gripconcentrically encircling the upstanding pipe and attached to the pistonrod, the said hand grip being freely slidableover and guided by theupstanding pipe to effect reciprocation of the piston and consequentactuation of the pump.

2. In a dispensing pump, a liquid storage tank, a pump cylinder mountedthereon and extending near the bottom thereof, a concentric secondcylinder surrounding and attached to the top of said pump cylinder,forming a mounting therefor and also forming an enclosed. annular spacethereinbeween, the said annular space communicating with saidstorage'tank, a vent in said pump cylinder communicating with the top ofsaid annular space, the said vent and the said annular space forming adrain-back for excess liquid.

3. In a dispensing pump having a dispensing point above the dischargeoutlet of said pump, a pump cylinder, an upstanding pipe forming acontinuation of said pump cylinder, the said upstanding pipe extendingto a height above that of the said dispensing point, a discharge outletpositioned between said cylinder and said upstanding pipe andcommunicating with said pump, a second cylinder concentric with andsurrounding said pump cylinder, the said second cylinder being attachedto the top of said pump cylinder and forming an annular closed spacethereinbetween, a vent in said pump cylinder communicating with the topof said annular space, the said vent and the said annular space forminga drain-back for excess liquid.

4. A pump comprising a pump cylinder, a pump rod and piston thereon,reciprocable in said pump cylinder, a storage tank into which said pumpcylinder extends, a discharge outlet communlcating with said pumpcyhnder, a conduit leadmg from said discharge outlet to a point ofdispensing at a higher level, an upstanding pipe above said dischargeoutlet forming a continuation of said pump cylinder extending asubstantial distance above the said dispensing point, a stuffing box insaid cylinder above the upper limit of the piston stroke and above thedischarge outlet for preventing undue leakage of liquid therebeyond intosaid upstanding pipe, and atubular hand grip concentrically encirclingthe said upstanding pipe and attached to the piston rod, the said handgrip being freely slidable over and guided by the upstanding pipe toefiect reciprocation of the piston and consequent actuation of the pump.

5. A pump with the structure of claim :2, in which an upstanding pipe ismounted above and forms a continuation of said pump cylinder, the saidupstanding pipe forming a guide for a tubular, concentric hand grip towhich is attached the piston rod of said pump.

In testimony whereof, I have hereunto aliixed my signature.

